mpu.h File Reference

#include <stdint.h>
#include <stdbool.h>

Data Structures
struct	MpuRegion
	MPU region, described by its real base and size. More...

Enumerations
enum	MpuCachePolicy { MpuCachePolicy_NotCacheable , MpuCachePolicy_WriteThrough , MpuCachePolicy_WriteBackWriteAllocate , MpuCachePolicy_WriteBackNoWriteAllocate }
	Cache policy of a region. More...
enum	MpuPermissions {   MpuPermissions_NoAccess , MpuPermissions_PrivRW , MpuPermissions_PrivRW_UserRO , MpuPermissions_PrivRW_UserRW ,   MpuPermissions_PrivRO , MpuPermissions_PrivRO_UserRO , MpuPermissionsCount }
	Access permissions of a region. More...

Functions
void	mpu_enable (void)
	Enable the MPU.
void	mpu_disable (void)
	Disable the MPU.
void	mpu_set_region (const MpuRegion *region)
	Program a region.
MpuRegion	mpu_get_region (int region_num)
	Read back a programmed region.
void	mpu_get_register_settings (const MpuRegion *region, uint32_t *base_address_reg, uint32_t *attributes_reg)
	Compute the register values for a region without programming it.
bool	mpu_memory_is_cachable (const void *addr)
	Check whether an address may be cached.
void	mpu_init_region_from_region (MpuRegion *copy, const MpuRegion *from, bool allow_user_access)
	Copy a privileged read/write region, optionally granting unprivileged access.